bagworm

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noun bag·worm \-ˌwərm\

Definition of bagworm

  1. :  any of a family (Psychidae) of moths with wingless females and plant-feeding larvae that live in a silk case covered with plant debris; especially :  one (Thyridopteryx ephemeraeformis) often destructive to deciduous and evergreen trees of the eastern U.S.

1811

First Known Use of bagworm

1811

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